Problem with PORTAL_NODE

[sschult]

Hello,

I am trying to show the tab navigation in a portlet

I created a standard portlet and used the content of tabs.jsp (from JBoss 2.7.1) ind my navigation_view.jsp

<%@ page import="java.util.Iterator" %>
<%@ page import="org.jboss.portal.api.node.PortalNode" %>
<%@ page import="java.util.Locale" %>
<%@ page import="java.util.ArrayList" %>
<%@ page import="org.jboss.portal.api.PortalRuntimeContext" %>

<%
 PortalNode root = (PortalNode)request.getAttribute("org.jboss.portal.api.PORTAL_NODE");
 PortalNode portal = root;
 PortalNode mainPage = portal;

 while (portal.getType() != PortalNode.TYPE_PORTAL)
 {
 mainPage = portal;
 portal = portal.getParent();
 }

 PortalRuntimeContext context = (PortalRuntimeContext)request.getAttribute("org.jboss.portal.api.PORTAL_RUNTIME_CONTEXT");

 // Get a locale
 Locale locale = request.getLocale();
 if (locale == null)
 {
 locale = Locale.getDefault();
 }
%>

<ul id="tabsHeader">
 <%
 ArrayList tmp = new ArrayList(10);
 Iterator childrenIt = portal.getChildren().iterator();
 while (childrenIt.hasNext())
 {
 PortalNode child = (PortalNode)childrenIt.next();

 // Get the list of child pages
 tmp.clear();
 for (Iterator i = child.getChildren().iterator(); i.hasNext();)
 {
 PortalNode childChild = (PortalNode)i.next();
 if (childChild.getType() == PortalNode.TYPE_PAGE)
 {
 tmp.add(childChild);
 }
 }
 %>
 <li <%
 if (child == mainPage)
 {
 out.println(" id=\"current\"");
 } %> onmouseover="this.className='hoverOn'"
 onmouseout="this.className='hoverOff'"><a
 href="<%= child.createURL(context) %>"><%= child.getDisplayName(locale) %><%
 if (tmp.size() == 0)
 {
 %></a>
 <%
 }
 else
 {
 %>
 <!--[if IE 7]><!--></a><!--<![endif]-->
 <!--[if lte IE 6]>   <table><tr><td><![endif]-->
 <ul>
 <%
 for (Iterator j = tmp.iterator(); j.hasNext();)
 {
 PortalNode childChild = (PortalNode)j.next();
 %>
 <li><a href='<%= childChild.createURL(context) %>'><%= childChild.getDisplayName(locale) %>
 </a></li>
 <%
 }
 %>
 </ul>
 <!--[if lte IE 6]></td></tr></table></a><![endif]-->
 <%
 }
 %>
 </li>
 <%
 }

 %>
</ul>

In my navigation.java is used

import javax.portlet.PortletException;
import java.io.IOException;
import javax.portlet.PortletMode;
import javax.portlet.PortletRequestDispatcher;
import javax.portlet.UnavailableException;
import javax.portlet.filter.FilterChain;
import org.jboss.portlet.JBossActionRequest;
import org.jboss.portlet.JBossActionResponse;
import org.jboss.portlet.JBossPortlet;
import org.jboss.portlet.JBossRenderRequest;
import org.jboss.portlet.JBossRenderResponse;
import org.jboss.portlet.filter.JBossPortletFilter;

/**
 * navigation Portlet Class
 */
public class navigation extends JBossPortlet {

 private static final String VIEW = "/WEB-INF/jsp/navigation_view.jsp";


 @Override
 public void processAction(JBossActionRequest request, JBossActionResponse response) throws PortletException, IOException {

 response.setPortletMode(PortletMode.VIEW);
 return;
 }

 @Override
 protected void doView(JBossRenderRequest request, JBossRenderResponse response) throws PortletException, IOException, UnavailableException {

 response.setContentType("text/html");
 PortletRequestDispatcher prd = getPortletContext().getRequestDispatcher(VIEW);
 prd.include(request, response);
 }
}

Deploying of the Portlet works great with no errors, if I start teh Portlet I get an exception

15:41:44,394 ERROR The portlet threw an exception
javax.portlet.PortletException: org.apache.jasper.JasperException: An exception occurred processing JSP page /WEB-INF/jsp/navigation_view.jsp at line 12

9: PortalNode portal = root;
10: PortalNode mainPage = portal;
11:
12: while (portal.getType() != PortalNode.TYPE_PORTAL)
13: {
14: mainPage = portal;
15: portal = portal.getParent();

Where is my fault ? Is anyone able to help me ?

Thanks,
Stephan

[sschult]

sorry, forgot this part..

Environment:
JBoss Portal 2.7.1 bundeled with JBoss AS Server 4.2.3.GA
Using included hsqldb
OS Win XP SP3

portlet.xml

<?xml version='1.0' encoding='UTF-8' ?>
<portlet-app xmlns='http://java.sun.com/xml/ns/portlet/portlet-app_2_0.xsd' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xsi:schemaLocation='http://java.sun.com/xml/ns/portlet/portlet-app_2_0.xsd http://java.sun.com/xml/ns/portlet/portlet-app_2_0.xsd' version='2.0'>
 <filter>
 <filter-name>JBoss Portlet Filter</filter-name>
 <filter-class>org.jboss.portlet.filter.JBossPortletFilter</filter-class>
 <lifecycle>ACTION_PHASE</lifecycle>
 <lifecycle>RENDER_PHASE</lifecycle>
 </filter>
 <filter-mapping>
 <filter-name>JBoss Portlet Filter</filter-name>
 <portlet-name>navigation</portlet-name>
 </filter-mapping>

 <portlet>
 <description>navigation</description>
 <portlet-name>navigation</portlet-name>
 <display-name>navigation</display-name>
 <portlet-class>de.infotech.portlet.navigation.navigation</portlet-class>
 <expiration-cache>0</expiration-cache>
 <supports>
 <mime-type>text/html</mime-type>
 <portlet-mode>VIEW</portlet-mode>
 </supports>
 <resource-bundle>de.infotech.portlet.navigation.messages</resource-bundle>
 <portlet-info>
 <title>navigation</title>
 <short-title>navigation</short-title>
 </portlet-info>
 </portlet>
</portlet-app>

Thanks,
Stephan

[wesleyhales]

Check for null on your request attribute, and do you have this filter defined http://docs.jboss.org/jbportal/v2.7.0.B1/referenceGuide/html/changelog.html

[bmachado]

SSchult,

In your case, you don't have the org.jboss.portal.api.PORTAL_NODE attribute set in your request. So, try to get it from Navigation.getCurrentNode() or in case of using JBossRenderRequest you can use request.getPortalNode() (is the same).

public PortalNode getPortalNode()
 {
 return Navigation.getCurrentNode();
 }

Bruno Rossetto
http://brmachado.blogspot.com/
http://jbossbrasil.ning.com/